Fourths to thomas r



(No Model.) 5 Sheets-Sheet 1.

- W. H. MORGAN.

LOGOMOTIVE CRANE. No. 496,428.

attempt] m: NuRms PETERS 00v. PHOTO-LITNQ, WASHINGTUN. n. l;

(No Model.) 5 Sheets-Sheet 2..

W. H. MORGAN. LOGOMOTIVB CRANE.

No. 496,428. Patented May 2,1893.

(No Model.)- 5 Sheets-Sheet 3. W. H. MORGAN. IL'OGOMOTIVE CRANE. No.496,428. Patent 2 1 I llvll- THE norms PETERS c0, Pnmoumo" wnsnmn'rou. a:4

(No Model.) 5 sh eets -sheet- 4.

W. .H. MORGAN.

LOGOMOTIVE'GRANE; v. No. 496,428. Patent-ed May 2', 1893.

m: uonms PETERS 00 wo'ro'umou W5SNINGYDN, u. c.

(No Model.) Y

W. H. MORGAN. LOGOMOTIVE ORAN-E. No. 496,428. Patented May 2, 1893.

5 Sheets-Sheet 5.

I wvmto'c 4', new a A. i I

UNITED STATES PATENT OFFICE.

IVILLIAM HENRY MORGAN, OF ALLIANCE, OHIO, ASSIGNOR OF THREE- FOURTHS TOTHOMAS R. MORGAN, SR, THOMAS R. MORGAN, J R., AND JOHN R. MORGAN, OFSAME PLACE.

LOCOMOTlVE-C RAN E.

SPECIFICATION forming part of Letters Patent No. 496,428, dated May 2,1893.

Application filed November 25, 1891. Serial No. 413,048. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM HENRY Mon- GAN, of Alliance, in the countyof Stark and State of Ohio, have invented certain new and usefulImprovements in Locomotive-Cranes; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to an improvementin cranes, the object being toprovide a portable locomotive crane in which all the movable parts areactuated by electricity.

A further object is to provide the crane with a movable counterpoise andmechanism for moving the same, whereby the counterpoise can be moved toa position to balance the load carried by the jib, thereby requiringless material in the parts connecting the body of crane with the truckand overcoming all possibility of upsetting.

With these ends in view my invention consistsin the parts andcombinations of parts as will be more fully described and pointed out inthe claims.

In the accompanying drawings, Figure 1 is a view in side elevation of acrane embodying my invention. Fig. 2 is an end view. Fig. 3 is a planview, and Fig. 4a view of the jib, and Fig. 5 is a view showing one ofthe brakes thereon, and also showing a diagrammatic view of the motor.

A represent-s a trackway on which the truck 13, moves. While a trackwayis not essential itis desirable, and hence in the several illus trationsI have shown the truck mounted on four flanged wheels 0, which latterare secured to the axles D and the latter mounted at their ends in boxesE.

Located under the body of the truck is an electric motor F, the armatureshaft of which carries a small pinion a which latter meshes with alarger pinion I) (see Fig. 2) having a smaller pinion 0 (shown in dottedlines in Fig. 2) fast therewith. This pinion c meshes with a pinion dfast on the shaft F running lengthwise the truck, and the said shaft isprovided at its ends with bevel pinions e which latter engage the largerbevel pinions 6' fast on the axles of the truck. This motor is foractuating the travel of the crane and it, and the other motors to behereinafter referred to, are controlled by an attendant located on theplatform or cage H (see dotted lines Fig. 3) within easy reach of thehand wheels f which latter actuate the switches and rheostats not shown.

Located under the truck, is asecond motor F shown in full lines in Fig.1 and in dotted lines in Fig. 3. This motor is provided on its armatureshaft with a small pinion f which latter actuates the larger pinion f 2carrying the smaller pinion F. The latter pinion gears with large pinionf on end of shaft f 5 and the latter is provided on its opposite endwith a bevel pinion f meshing with the bevel pinion f on the lower endof vertical shaftf This shaftf is mounted in bearings carried by thetruck, and is provided at its upper end with a pinion f which latterengages the toothed ring f carried by the platform I, for turning saidplatform in any direction. The platform I is supported near its centerof gravity on a turn table consisting of a series of conical rollersjournaled at their ends to concentric bands gg, (see dotted lines Fig.3)

the rollers resting on a suitable bed plate car-,

ried by the truck and supporting the platform. The platform I ispreferably made of angle iron, with a flooring or not as desired,

and provided at one end with a jib J which latter as shown in Fig. 4 ispreferably V shaped and as shown in Fig. l is pivoted at its lower endto the side girders of the platform I. The lower ends of the jib are setwell back toward the turn table, and the jib is provided at its upperend with alinkj carrying pulleys j, while the platform Iis provided withlonger links 7' secured near the extreme ends of the side girders, thesaid longer links carrying the pulleys 3' A chain j is attached at oneend toa yoke or link or other device carried by the links j and passesfrom thence around one pulley j thence around a pulley 7' and then backand around a second pulley j and down to another pulley 3' and so onaround all the pulleys j and 7' The chain is then passed over a pulleycarried by the jib and from thence down to winding drum L. This drum ismounted on platform I and is actuated by the motor K, through thepinions 70, 70', 71: k 76 and W; the pinions 7t and 70 being rigidlysecured together and the pinions k and k being fast to the opposite endsof a shaft while the large pinion k is fast to the winding drum L. Bymeans of the motor K, the chain and winding drum, the jib can beelevated or lowered as necessity demands. It is evident that the jib canbe fixed or stationary, and with such a construction the motor K and thechain for elevating and lowering same would be dispensed with. The jibis provided on its extreme end with a pulley m over which the hoistingchain M passes. This chain is secured at its lower end to the drum Mwhichlatter is actuated by the electric motor M through the pinions m, m117. m, m m, m and m The pinion m is fast on the armature shaft andmeshes with the larger pinion m carrying a pinion of; the pinion mdrives a larger pinion m fast on one end of shaft m and in turn drivesthe smaller pinion m fast on the opposite end of said shaft and thelatter pinion m meshing with larger pinion m actuates the shaft carryingpinion m and the latter in turn drives the large pinion m fast on thewinding drum M.

The platform I is provided at its rear end with parallel rails N onwhich the weight N is movably mounted, the said weight being preferablyprovided with grooved or flanged wheels as shown for preventing lateraldis placement of the weight.

N is a screw secured at its forward end against rotation, and extendingrearwardly toward the weight N the latter having an opening therein forthe entrance of the screw. N is a pinion secured to a nut, the latterbeing swiveled to the weight and threaded internally to correspond withthe threads on the screw N When the pinion N is turned it follows thatthe nut carried thereby is also turned and necessarily moves lengthwisethe screw, carrying with it the weight N. The pinion N is actuated bythe pinion n on the armature shaft of the electric motor N the latterbeing seated on a shelf N carried by the weight N. Thus it will be seen,that by passing a current through the motor N the revolving armatureimparts motion to the pinion N" and the latter in turn to the nutthereby causing the weight to be moved toward or away from the rear endof the plat-form I. By employing a movable counter poise or weight, andproviding means whereby the position of the weight can be readilyandquickly changed, the crane can at all times be kept nicely balanced, sothat it can be swung easily, and is protected against any chances ofupsetting. Again, by connecting the weight to the screw, so that theweight is held against movement either toward or away from the jib,except when the pinion N is turned, there is no chance of the weightsliding or changing its position should the crane accidentally tilt soas to give the rails a slight inclination.

While the movable weight and the mechanism for moving same is desirable,and probably preferable, yet I do not limit the application of the otherfeatures of the device to a crane having a movable counterpoise, as itmay be desirable in some cases where the objects to be lifted arepractically uniform in weight, to have the weight fixed to the platform.

In connection with the motor for actuating the longitudinal travel ofthe crane, and the motor for hoisting the load, I have provided gravitybrakes held out of operation when the motors driving the said parts arein operation, by electro magnets included in said motor circuits, andenergized by the current flowing through same; the construction is suchthat as soon as the current is broken by accident or design, the magnetsbecoming de-energized immediately release their respective brakes sothat the latter acting by gravity clutches and hold the rotating partsagainst movement and thereby stops the travel of the crane, or if it bethe brake on the hoisting mechanism, prevents any load then sustained bysaid hoisting mechanism from falling.

The brakes for sustaining the load and stopping the travel of the craneare both shown in Fig. 1, and as they are both constructed and operatealike, a description of the one for braking the hoisting dru m willsuffice for both. The same reference letters however are employed 011the corresponding parts of both brakes. This brake consists of aflexible strap fastened at one end to a bracket or other fixed structureand passes under the disk or brake wheel 0' fast on the longitudinalshaft which drives both axles, the other end of said strap being securedto the short arm 0 of lever o pivoted to the motor frame or other fixedpart of the structure.

0 is an electro magnet consisting of two solenoids yoked together andprovided with movable cores joined by a yoke or armature 0 whichnecessarily moves with the said cores. The lever 0 has its long armjointed to the center of the armature by a sliding pivotal connection.The solenoids are included in the circuit of the motor actuating theaxles, so that when said motor is in operation, the whole or part of thecurrent passes through the solenoids and energizing them, causes them todraw up the armature, thereby movin g the lever on its pivot and causingthe brake strap to fall away from the brake wheel and offer noresistance to the rotation of the latter. When the circuit through themotor is broken, purposely or otherwise, the solenoids will bede-energized and allow the armature to drop away from them by its ownweight; this movement of the armature elevates the short arm of thelever and forces the strap solidly against the brake wheel. The weightof the cores, armatures and long arm of the lever are sufficient toapply the brake strap with a force suliicient to prevent any rotation ofthe shaft which actuates the axle, or sufficient to sustain any loadthat can be hoisted by the crane, so that when the current is cut-01fthe crane is immediately stopped, or the descent of the load checked asthe case may be. In the brake for sustaining the load, the brake strappasses over a brake wheel fast on the armature shaft and in this respectdiffers from the arrangement of parts above described. These brakes canbe applied to the other motors of the crane if so desired.

The operators platform is as shown in dotrheostats and manner ofcollecting the current form no part of my present invention and are notshown or described.

Instead of having the screw stationary as above described the screw canbe movable and be actuated by a pinion fast on same.

It is evident that many slight changes might be resorted to in therelative arrangement of parts Without departing from the spirit andscope of my invention and hence I would have it understood that I do notconfine myself strictly to the exact construction of parts hereindescribed, but,

Having fully described my invention,what I claim 'as new, and desire tosecure by Letters Patent, is-

1. In a jib crane, the combination with a truck mounted on Wheels, amovable platform on the truck, a jib, and hoisting mechanism, of amovable counterpoise on the platform and a motor carried by saidcounterpoise for moving the latter, substantially as set forth.

2. In a jib crane the combination with a truck mounted on wheels, and apivoted platform on said truck, of a pivoted jib, an electric motor forchanging the inclination of the jib, a counterpoise adapted to be movedtoward and away from the jib and an electric motor carried by saidcounterpoise for moving same.

3. In a jib crane, the combination with a truck mounted on wheels, ahorizontally swinging platform on said truck and hoisting devicescarried by said platform, of a trackway on said platform, a movablecounterpoise thereon, and a motor carried by said counterpoise formoving same.

4. The combination with a truck mounted on wheels, a platform pivotallymounted on said truck, and hoisting mechanism on the platform, of astationary screw, a movable said screw and counterpoise, and an electricmotor for moving said device, substantially as set forth.

6. In a locomotive crane, the combination with a truck an electric motorand gearing for driving same, a platform mounted to turn horizontally onsaid truck, and an electric motor and gearing for turning said platform,of a gravity brake for the driving mechanism of the truck and an electromagnet in the circuit of said truck driving motor adapted to act on saidbrake and hold it out of operation when the motor circuit is closed,substantially as set forth.

7. In a locomotive crane, the combination with a truck mounted onwheels, of a platform pivoted to the truck and provided with a jib andhoisting mechanism, an electric motor for actuating the hoistingmechanism, a gravity brake for the hoisting mechanism an electro magnetin the motor circuit acting on the brake to hold it out of operationwhen the motor circuit is closed, and an electric motor 9 and gearingcarried by the truck for turning the platform.

8. In a locomotive crane the combination with a truck, a platformloosely mounted so as to turn thereon, a jib hoisting mechanism, anelectric motor for driving the truck and an independent electric motorfor actuating the hoisting mechanism,, of independent gravity brakes forthe truck and hoisting mechanism, and an electro magnet for each brake,the said magnets being in circuit with their respective motors andacting on the brakes to hold them out of operation when their respectivemotor circuits are closed.

9. The combination with a truck, a turn table, a platform on the turntable, an adj ust- WILLIAM HENRY MORGAN.

Witnesses:

F. E. DUssEL, H. W. HARRIS.

